*shrug*sorry but I dont get it
With all respect to those who do colour their pets , my opinion is that any animal looks better as nature intended them
I don't color my pets often (actually this was the first time I ever have). It washed out completely and they're now back to 'normal'.
If you don't like it fine, but I dont' see the big deal AT ALL to be honest. Don't like it, then don't color your dogs.